var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var routes = require('./routes/index');
// var users = require('./routes/users');
//引入数据库配置文件
var settings = require('./setting');
//引入flash插件
var flash = require('connect-flash');
//引入会话(服务器端)插件
var session = require('express-session');
var MongoStore = require('connect-mongo')(session);
var app = express();

// 设置模版引擎
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));  //使用小图标
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

//上面引用过的，这里使用flash插件
app.use(flash());
//使用session会话
 app.use(session({
 	secret:settings.cookieSecret,
 	key:settings.db,
 	cookies:{macAge:1000*60*60*24*30},
 	store:new MongoStore({
 		url:'mongodb://localhost/simple'
 	}),
 	resave:false,
 	saveUninitialized:true
 }))


//app.use('/', routes);
// app.use('/users', users);
// 将app这个应用传入到routes函数(路由)里面进行处理，路由模块里就不用在调用express模块，更简单
 routes(app);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});
// 让整个应用程序启动起来
 app.listen(3000,function () {
    console.log('node is OK!')
})
module.exports = app;
